My player entity has been re-created after exiting the sandbox. I control a new player with zero configured logistics and have no gear or inventory. I can see the other player (old me) standing in place and can loot him, but I can't figure out if there is any way to re-control the old player entity.

Also I am unable to reproduce the bug as of now. I thought it may be caused by entering the sandbox while flying with a Jetpack, but no success so far.
Looting the inventory and gear and re-configuring the logistics is a partial workaround, but as I also play with
https://mods.factorio.com/mod/RPGsystem
enabled, it broke the rpg system by re-creating my player. I still have my old level and its requirements, but none of the benefits I gained so far.

This means that the character you were when you entered the Sandbox is no longer valid; it cannot be made valid again, and being invalid means we cannot read anything about it either. There's nothing this mod did it invalidate the old character, and it's a possibility we have to deal with, however unlikely it is.

I'll need a way to reproduce this to see if there's any ways of fixing or preventing this.

Thank you. If i encounter it again, I will provide the necessary steps in detail. My redneck workaround for now was taking the old players stuff, re-configuring the logistics by hand and disabling the RPG Mod, then re-enabling it. This reset my level to 1 at least, which still robbed my progress thus far, but at least it removed the harsh penalty of requiring my old character's exp requirement for further level ups.

Thanks for the response.